Date

Place

[14-1]
14:00 ~ 14:25
Title:[Invited] Metastable TN-LCDs: Its Performances and the Method for Stable Operation
Mitsuhiro Akimoto and Kohki Takatoh (Tokyo Univ. of Science, Yamaguchi, Japan)
Abstract: In the present study, we show the display performance of two types of metastable TN-LCDs: Reverse TN (RTN)-LCD and Ultra-Short-Pitch (USP) TN-LCD. The Reverse TN (RTN)-LCD works at quite low driving voltage and the UPS TN-LCD exhibits a greatly improved response times as compared to the conventional TN-LCD. Those metastable TN-LCDs are implemented with a chiral nematic LC material and based on the 90�� twisted nematic effect. In that sense existing technologies for the conventional TN-LCDs such as viewing angle compensation are also applicable as one of advantageous points of them. However, as a demerit which has to be overcome, both proposed TN-LCDs use metastable LC director configurations which are not suitable for stable LCD operation. Thus we apply the polymer stabilization method by means of UV curable LC monomers. By optimizing the UV irradiation condition, we succeeded in fabricating a stable RTN-LCD which keeps great reduction of working voltage and a stable USP TN-LCD which keep shorter response time as well as lower driving voltage and high contrast ratio.
PDF Download

Type